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LM49120TLEVAL Datasheet(PDF) 18 Page - Texas Instruments

Part # LM49120TLEVAL
Description  LM49120 Audio Sub-System with Mono Class AB Loudspeaker Amplifier and Stereo OCL/SE Headphone Amplifier
PDF  29 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM49120TLEVAL Datasheet(HTML) 18 Page - Texas Instruments

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START
MSB
DEVICE ADDRESS
LSB
ACK
SCL
SDA
STOP
MSB
REGISTER DATA
LSB
ACK
R/W
LM49120, LM49120TLEVAL
SNAS431C – JUNE 2008 – REVISED MAY 2013
www.ti.com
Figure 46. Example Write Sequence
Table 1. Device Address
B7
B6
B5
B4
B3
B2
B1
B0 (R/W)
Device
1
1
1
1
1
0
0
0
Address
Table 2. Control Registers
B7
B6
B5
B4
B3
B2
B1
B0
Shutdown Control
0
0
0
OCL/SE
HP/BTL
SD_I2CVDD
Turn_On _Time
PWR_On
Output Mode Control
0
1
0
0
MC3
MC2
MC1
MC0
Output Gain Control
1
0
0
0
LS_GAIN
HP_GAIN2
HP_GAIN1
HP_GAIN0
Mono Input Volume
1
0
1
MG4
MG3
MG2
MG1
MG0
Control
Left Input Volume
1
1
0
LG4
LG3
LG2
LG1
LG0
Control
Right Input Volume
1
1
1
RG4
RG3
RG2
RG1
RG0
Control
Table 3. Shutdown Control Register
Bit
Name
Value
Description
0
Single-Ended headphone mode (Capacitively Coupled)
B4
OSC/SE
1
Output Capacitor-less (OCL) headphone mode
0
Single-ended stereo headphone output mode
B3
HP/BTL
1
Mono, BTL output mode.
I2CVDD acts as an active low RESET input. If I
2CV
DD drops below 1.1V,
0
the device is reset and the I2C registers are restored to their default
B2
SD_I2CVDD
state.
1
Normal Operation. I2CVDD voltage does not reset the device
0
Fast turn on time (120ms)
B1
TURN_ON_TIME
1
Normal turn on time (130ms)
0
Device Disabled
B0
PWR_ON
1
Device Enabled
Table 4. Output Mode Control (HP/BTL = 0)
Output
Mode
MC3
MC2
MC1
MC0
LS Output
HP R Output
HP L Output
Number
0
0
0
0
0
SD
SD
SD
1
0
0
0
1
GM x M
Mute
Mute
2
0
0
1
0
2 x (GL x L + GR x R)
Mute
Mute
2 x (GL x L + GR x R)
3
0
0
1
1
Mute
Mute
+ GM x M
4
0
1
0
0
SD
GM x M/2
GM x M/2
5
0
1
0
1
GM x M
GM x M/2
GM x M/2
6
0
1
1
0
2 x (GL x L + GR x R)
GM x M/2
GM x M/2
18
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Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: LM49120 LM49120TLEVAL



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